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30 October, 05:13

John drives at an average speed of 40 miles per hour for the first 5 hours of the 655 mile trip to buffalo. Charlie then drives the remaining distance in 7 hours. What is Charlie's average driving speed?

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  1. 30 October, 05:35
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    65mph

    John drove a total of 200 miles (40mph•5)

    655-200 = 455 miles

    Charlie drove this in seven hours, and 455mi/7hours = 65mph
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